Microtiter stick



FIG. 1 is a top perspective view of a microtiter stick, showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left-end view thereof;

FIG. 7 is a right-end view thereof;

FIG. 8 is a cross-sectional view taken on line VIII--VIII of FIG. 3. 

The ornamental design for a microtiter stick, as shown. 